JP2001278068A - Steering device of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a steering device of a vehicle which is reduced in weight of the vehicle by eliminating the need of an actuator such as an electric motor to change an attitude of the steering device, secures a wide space near the feet of a driver, and to simplify the structure. SOLUTION: A fist guide part is provided on a steering column bracket, a second guide part is provided below the first guide part on the steering column bracket, a column holding member, one side of which is secured to the steering column, is disposed extending from the steering column bracket to the steering column, the column holding member is provided with a first guided part freely movably engaged with the first guide part and a second guided part freely movably engaged with the second guide part, and freely movably held on the steering column bracket, and the column holding member or the steering column bracket is provided with a locking mechanism for fastening or unfastening the member and bracket.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steering apparatus for a vehicle which is used by switching its posture according to driving or resting.

[0002]

2. Description of the Related Art Conventionally, a steering apparatus shown in FIGS. 12 to 14 has been known as a steering apparatus used for a vehicle such as a truck. In the figure, a steering column bracket 102 is fixedly arranged in a cab 101, and a steering column 103 is arranged at an angle behind the steering column bracket 102.
The steering column 103 is held by the steering column bracket 102.

The steering column 103 is mounted on a column support bracket 104 fixed to the steering column bracket 102.
A column tube 105 that is held at 04 in an adjustable manner;
And a steering shaft 106 penetrating through the column tube 105. This steering shaft 1
A steering handle 107 is attached to the distal end 106A of 06. A column tube 105 is held by the column support bracket 104 via a lever lock device 108 so as to be adjustable in the axial length direction of the steering shaft 106 and the mounting angle direction (α).

[0004] The adjustment range of the column tube 105 in the axial length direction is determined by a long hole 105A provided on the column tube 105,
It is limited to the longitudinal dimension of the long hole 105B. The range of the mounting angle direction (α) of the column tube 105 is as shown in FIG.
2 is limited to the range of the predetermined angle θ. Therefore, the adjustment range of the mounting angle direction (α) of the column tube 105 is
It is limited to the state shown by the two-dot chain line Y in FIG.

Although the operability of the column tube 105 in the driving state is improved by adjusting the axial length direction and the mounting angle direction (α) of the column tube 105, the distance between the steering handle 107 and the driver is narrow, for example, during a break. , While waiting for unloading,
When changing clothes in the cab 101, the steering handle 107 becomes an obstacle. Therefore, at the time of a break or the like, it is required to increase the distance between the steering handle 107 and the driver.

[0006] As a steering device meeting such a demand, for example, a steering device disclosed in Japanese Patent Application Laid-Open No. 9-109901 is disclosed as shown in FIG. As shown in the figure, a steering device 201 has a steering shaft 203 connected to a gear box side (not shown) via a universal joint 202, a tilt angle (a) selected during driving, a break, etc. (B), a pair of rotatable brackets 204 and 205 integrally connected so as to sandwich the shaft 203, an electric motor 206, and the rotational force of the electric motor
04, 205.

[0007] Then, according to the time of driving or a break,
The steering shaft 203 is rotated in the vehicle front-rear direction by the electric motor 206 to change the inclination angle, and the posture of the steering device 201 is switched. For the steering shaft 203, the inclination angle (a) is selected during driving, and the inclination angle (b) is selected during a break or the like.

The mechanism using the electric motor 206 of the steering device 201 is applied to the vehicle steering device shown in FIGS. 12 to 14 to increase the distance between the steering handle 107 and the driver during a break or the like. It is possible.

[0009]

However, when the mechanism using the electric motor 206 is applied to the vehicle steering apparatus shown in FIGS. 12 to 14, the following problem occurs, which is not preferable.

In the conventional steering apparatus 201, the attitude of the steering shaft 203 is changed by changing the inclination angle of the steering shaft 203 using the electric motor 206. Therefore, the electric motor 206 as an actuator is required to change the inclination angle of the steering shaft 203, which complicates the structure and increases the weight. The electric motor 2
In order to compensate for the torque of 06, the rotation transmission mechanism 207 is required, which makes it difficult to reduce the weight of the vehicle. further,
The electric motor 206 generates a large amount of heat, requires complicated parts to operate, and it is difficult to reduce the weight of the vehicle. Further, a space for the electric motor 206 and its related parts is required, which is not preferable in terms of securing a large space near the driver's foot.

As described above, it is not preferable to apply a mechanism using the electric motor 206 as an actuator to change the attitude of the vehicle steering apparatus shown in FIGS. SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. An object of the present invention is to reduce the weight of a vehicle without using an actuator such as an electric motor to change the attitude of a steering device, and to reduce a driver's foot. An object of the present invention is to provide a vehicle steering device capable of securing a wide space nearby and simplifying the structure.

[0012]

According to the first aspect of the present invention,
In a steering apparatus for a vehicle, comprising: a steering column bracket fixed in a cab; and a steering column arranged to be inclined rearward of the steering column bracket, a first guide portion is provided on the steering column bracket, A second guide portion is provided on the steering column bracket below the first guide portion, and a column holding member having one side fixed to the steering column is arranged from the steering column bracket to the steering column, and the column holding member is provided. Is a first guide movably engaged with the first guide portion.
A guided portion and a second guide movably engaged with the second guide portion.
A guide portion, the first guide portion, the first guide portion, the second guide portion, and the second guide portion, movably held by the steering column bracket, and the column holding member. Alternatively, the steering column bracket is provided with a lock mechanism for tightening or releasing the tightening.

According to a second aspect of the present invention, in the vehicle steering system according to the first aspect, the first guide portion and the second guide portion are guide holes, and the first guided portion and the second guided portion. The guide portion is a guide pin fixed to the column holding member. According to a third aspect of the present invention, in the vehicle steering apparatus according to the first aspect,
The first guide portion and the second guide portion are guide pins fixed to the steering column bracket, and the first guided portion and the second guided portion are guide holes.

According to a fourth aspect of the present invention, in the vehicle steering apparatus according to the first aspect, an upper portion of the column holding member is moved in a substantially vertical direction of the vehicle by the first guide portion and the first guided portion. The vehicle is freely held, and a lower portion is held by the second guide portion and the second guided portion so as to be movable in a substantially front-rear direction of the vehicle.

According to a fifth aspect of the present invention, in the vehicle steering apparatus according to the second aspect, the first guide portion is formed parallel to an axis of the steering column, and the second guide portion is connected to the steering column. Are formed along a direction substantially perpendicular to the axis of According to a sixth aspect of the present invention, in the vehicle steering system according to the third aspect, the first guided portion is formed parallel to an axis of the steering column, and the second guided portion is formed of the steering column. It is characterized by being formed along a direction substantially perpendicular to the axis.

(Operation) In the inventions according to the first to third aspects, the posture of the steering device is selected in accordance with (a) driving or (b) resting.
That is, when the driver or the like holds the steering column by hand and flips up the column holding member (moves the steering column upward while rotating the steering column back and forth), the steering column is driven as follows in (a) during operation. Is switched to any one of the driving posture state and the jumping state at the time of a break or the like.

(A) During operation The column holding member is in a lowered state. Therefore, the steering column integrated with the column holding member is in a lowered state, and is inclined toward the driver. For this reason,
The steering device is in a driving posture state. Here, the column holding member is fastened to the steering column bracket by the lock mechanism. Thus, the steering column is fixed to the steering column bracket via the column holding member.

(B) During a break, etc. When the driver manually releases the tightening of the lock mechanism, the tightening of the column holding member to the steering column bracket is released, and the steering column becomes movable. The steering column is flipped up manually by the driver.

The first guided portion is guided by the first guide portion of the steering column bracket and is lifted substantially upward, and at the same time, the second guided portion is guided by the second guide portion of the steering column bracket. Thereby, the column holding member is flipped up. That is, the steering column is switched to a jumping state (a state in which the steering column is lifted and rotated forward of the vehicle).

In this state, the space between the driver's seat and the steering column is widened. Then, the column holding member is fastened to the steering column bracket by the lock mechanism. Accordingly, the column holding member is fixed to the steering column bracket, and the steering column integrated with the column holding member is also fixed.

During a break or the like, the steering device is in this fixed state. When a break or the like ends, the tightening of the lock mechanism is released, and the steering column is manually lowered to return to the original state (driving posture state). In this state, the column holding member is fastened to the steering column bracket by the lock mechanism, and the steering device returns to the original state (driving posture state).

According to the present invention, when the steering column is jumped up, the steering column is moved rearward of the vehicle, and the angle of the steering column jumping up is increased.

[0023]

Embodiments of the present invention will be described below with reference to the drawings.

One embodiment of the vehicle steering apparatus according to the first, second, fourth and fifth aspects of the invention (hereinafter referred to as "first embodiment") will be described with reference to FIGS. I do. 1 to 5, a cab 1 is composed of a large number of panels made of a thin metal plate, and constitutes an integral three-dimensional shell structure as a whole.
It has a front assembly 2. The front assembly part 2 includes a cab floor 3, a front panel 4, a front member 5, an instrument member 6, and an instrument panel 7.
And the like. A steering device 8 is mounted in the cab 1.

The steering device 8 will be described below. A steering column bracket 9 is fixed to the front assembly 2. The steering column bracket 9 includes a pair of opposed substantially trapezoidal flat plates 9A,
9A and a connecting portion 9B for connecting the flat plates 9A, 9A. The connecting portion 9B is fixed to the front panel 4.

The first guide portions 10, 10 each formed of a linear slit-shaped guide hole are provided on the upper right portion of each of the flat plates 9A, 9A.
Are formed respectively. The first guides 10, 10
They face each other in the left-right direction. The axes of the first guide portions 10 and 10 are inclined so as to rise toward the rear of the vehicle (inclined upward to the right by slightly more than 45 degrees), and are formed parallel to an axis L of an upper steering shaft 15 described later.

Below the flat plates 9A, 9A are formed second guide portions 11, 11 each formed of a linear slit-shaped guide hole. The second guides 11 are opposed to each other in the left-right direction, and are located below the first guides 10. The axes of the second guides 11, 11 are inclined so as to descend toward the rear of the vehicle (a gentle downward slope), are formed along a direction substantially perpendicular to the axis L of the steering column 12, and are linear. It has become.

Then, the steering column bracket 9
The steering column 12 is disposed at an angle behind the steering column. The steering column 12 is a column holding member 1
It is fixed or movable (jumped up) to the steering column bracket 9 via the base 3.

First, the steering column 12 will be described below. The steering column 12 includes a column tube 14, an upper steering shaft 15 rotatably supported through the column tube 14, a steering handle 15 B mounted on an upper end 15 A of the upper steering shaft 15, The first substantially U-shaped bracket 16 and the second substantially U-shaped bracket 17, which are integrally fixed to the outside, and the first substantially U-shaped bracket 16 and the second substantially U-shaped bracket 17, And a cover member 18 having a gate-shaped cross section to be sandwiched.

In the first substantially U-shaped bracket 16, slit holes 16 A, 16 A (only one is shown) are formed parallel to the axis L of the upper steering shaft 15. The slit holes 17A, 17A (1
Are shown) is the axis L of the upper steering shaft 15.
Are formed in parallel. The cover plate 18 has longitudinal slit holes 18A, 18A (only one is shown) formed in a direction substantially perpendicular to the axis L of the upper steering shaft 15.

The guide pin 19 is formed in the cover plate 18 by slit holes 16A, 16A of the first substantially U-shaped bracket 16.
A, and the first substantially U-shaped bracket 16 is held on the cover plate 18 via the guide pin 19. A guide pin 20 is provided on the cover
The second substantially U-shaped bracket 17 passes through the slit holes 17A, 17A of the U-shaped bracket 17, and is held by the cover plate 18 via the guide pin 20. In this way, the cover plate 18 is
It is attached via a first substantially U-shaped bracket 16 and a second substantially U-shaped bracket 17.

The guide pin 20 has a nut 2
1, a steering adjustment mechanism 23 having a lever 22 is mounted. The column tube 14 is fixed to the cover plate 18 by the tightening operation of the steering adjustment mechanism 23. The position of the column tube 14 with respect to the cover plate 18 is adjusted by the operation of releasing the tightening of the tightening mechanism 23, whereby the column tube 14 is
8 to 8, the inclination angle of the upper steering shaft 15 in the axial length direction and the direction orthogonal to the axis L is shown in FIGS.
Can be adjusted within a predetermined range as in the conventional example shown in FIG.

Next, a structure in which the steering column 12 is held by the steering column bracket 9 via the column holding member 13 will be described. Cover plate 18
On the top 18B of the column holding member 13, one side 13A of the column holding member 13 is provided.
13A are respectively fixed. Column holding member 13
Has a first guided portion 24 made of a guide pin and a second guided portion 28 made of a guide pin.

The side plates 13B, 13B of the column holding member 13
A first guided portion 24 is bridged between the first guided portion 24 and the first guided portion 24.
The guided part 24 is the first part of the steering column bracket 9.
It is fixed to the column holding member 13 through the guide portions 10, 10. The first guided portion 24 includes the first guide portions 10 and 1.
0 is movably engaged. And the first guided part 2
4 is provided with a lock mechanism 25. Lock mechanism 25
Will be described. The lock mechanism 25 includes a nut 26 and a lever 27 arranged on one side plate 13 </ b> B of the column holding member 13. At the tip of the first guided portion 24, a male screw portion 24A is formed. A nut 26A is formed on an inner peripheral surface of the nut 26 on one end side thereof, and a female screw portion 26B is formed on an inner peripheral surface of the nut 26 on the other end side. Male screw for tightening 2
7A penetrates through the hole 27B at one end of the lever 27 and is screwed into the female thread 26B of the nut 26, whereby the lever 2
7 is fixed to the nut 26. By turning the lever 27 in the tightening direction, the nut 26 is
And the lock mechanism 25 is in the tightened state,
The column holding member 13 is the steering column bracket 9
To a fixed state. In this state, the steering column 12 is held by the steering column bracket 9 in a fixed state. Further, by turning the tightened lever 27 in the opposite direction to the tightening direction to loosen, the nut 26 is loosened, the tightening of the lock mechanism 25 is released, and the column holding member 13 is movable with respect to the steering column bracket 9. State. In this state, the steering column 12 is held by the steering column bracket 9 so as to be able to move (jump up).

As described above, in the column holding member 13, the lock mechanism 25 is mounted using the first guided portion 24, and the lock mechanism 25 is mounted on the first guide portions 10, 10 of the steering column bracket 9. At the one end 10A or the other end 10B, the first guided portion 24 is used to tighten or release the column holding member 13 to the steering column bracket 9. Since the lock mechanism 25 is mounted using the first guided portion 24, the mounting of the lock mechanism 25 can be simplified.

The side plate 13 of the column holding member 13
A second guided portion 28 is bridged between B and 13B,
The second guided portion 28 is fixed to the column holding member 13 through the second guide portions 11 of the steering column bracket 9. The second guided portion 28 is movably engaged with the second guide portions 11 and 11. In this manner, the column holding member 13 is arranged from the steering column bracket 9 to the steering column 12, and one side 13A of the column holding member 13 is fixed to the steering column 12. Column holding member 13
The upper portion is held by the first guide portion 10 and the first guided portion 24 so as to be movable in a substantially vertical direction of the vehicle, and the lower portion is substantially moved back and forth by the second guide portion 11 and the second guided portion 28. It is movably held by the steering column bracket 9 in the direction.

One end 29A of a tension spring 29 is locked and connected to the second guided portion 28. The other end 29B of the tension spring 29 is locked and connected to the claw piece 9C of the steering column bracket 9. The claw piece 9C is located in the middle between both ends 11A and 11B of the second guide portion 11, and is located at a predetermined distance from the second guide portion 11 in a direction perpendicular to the second guide portion 11. The tension spring 29 is inclined with respect to the longitudinal direction of the second guide portion 11. Due to the force F1 (D) of the urging force F1 of the tension spring 29 in the direction of the second guide portion 11, the second guided portion 28 is forced along the second guide portion 11 to the right F1 in FIG. (D) is given as the initial force.

An upper end 31A of the lower steering shaft 31 is connected to a lower end 15C of the upper steering shaft 15 via a universal joint 30, and a lower end 31B of the lower steering shaft 31 is connected to a steering gear side (not shown). The lower steering shaft 31 has a telescopic structure. Next, the operation of the first embodiment will be described.

The posture of the steering device 8 is selected in response to (a) driving or (b) resting.
That is, the driver lifts the column holding member 13 by holding the steering column 12 with his / her hand (moves the steering column 12 upward while rotating the steering column 12 back and forth in the vehicle), and the steering column 12 is moved as follows (a). ) It can be switched to either the driving posture state during driving or (b) a jumping state such as at rest. In addition, (a) the driving posture state during driving is shown by the solid line in FIG. 1, FIG.
(B) and (b) the jumping state during a break etc. is shown in FIG.
6, 7 (b) and 8 (b) (cross section taken along line X3-X3 in FIG. 6).

(A) During operation As shown in FIG. 1, the column holding member 13 is in a lowered state. Therefore, the steering column 12 integrated with the column holding member 13 is inclined and is in a driving posture state.
Thus, the steering handle 15B faces the driver. The column holding member 13 is fastened to the steering column bracket 9 at the other end 10B of the first guide portions 10, 10 of the steering column bracket 9 by the lock mechanism 25 (FIG. 7A).

Thus, the steering column 12 is fixed to the steering column bracket 9 via the column holding member 13. In this state, the steering device 8 is operated.

(B) During a break, etc. When the lever 27 is loosened by the driver and the lock mechanism 25 is released, the column holding member 13 is released from being tightened from the steering column bracket 9, and the steering column 12 is released. You can move. continue,
The steering column 12 is flipped up manually by the driver.

Here, the elastic force F is applied to the tension spring 29.
1 acts on the second guided portion 28, so that a component force F1 (D) (in the direction of the arrow) of the tension spring 29 is applied as the initial force. Thus, when the driver manually pulls the steering column 12 forward, the component force F1 (D) of the tension spring 29 acts in the direction of movement of the steering column 12, thereby reducing the driver's pulling force. Twelve jumping operations can be easily performed.

When the steering column 12 jumps up, the first guided portion 24 is guided by the first guide portions 10 and 10 and is lifted upward, and at the same time, the second guided portion 28 is lifted.
Are guided to the second guide portions 11 and 11. As a result, the column holding member 13 rotates and is flipped up (lifted upward while rotating back and forth in the vehicle). The column holding member 13 is held in a jumping state (a state where the column holding member 13 is lifted and rotated forward of the vehicle). Accordingly, the steering column 12 is switched to the jumping state.

When the steering column 12 is flipped up, the steering column 12 is moved to the rear of the vehicle.
The angle at which the steering column 12 jumps up increases.
In this state, the steering column 12 is in a vertical state as shown in FIG.
The space between the two becomes wider. And the lock mechanism 25
Accordingly, the column holding member 13 is fastened to the steering column bracket 9 at one end 10A of the first guide portions 10, 10. Accordingly, the column holding member 13 is fixed to the steering column bracket 9, and the steering column 12 integrated with the column holding member 13 is also fixed.

During a break or the like, the steering device 8 is in this fixed state. When a break or the like ends, the lever 27 is loosened, and the tightening of the lock mechanism 25 is released.
The steering column 12 is lowered. Here, as shown in FIG. 6, the elastic force F2 acts on the tension spring 29, and therefore, the tension spring 2 is applied to the second guided portion 28.
A component force F2 (D) of nine (facing in the direction of the arrow) is given as an initial force. Thus, when the driver manually pushes the steering column 12 back, the steering column 12
The component force F2 (D) of the tension spring 29 acts in the direction of the movement, and the pushing force of the driver is reduced, and the pushing of the steering column 12 can be facilitated.

When the lever 27 is turned in the tightening direction, the column holding member 13 is tightened to the steering column bracket 9 by the lock mechanism 25, and the steering device 8 returns to the original state. According to the above configuration, the following effects can be obtained. First, as compared with the case where the attitude of the steering device is switched using a conventional electric motor, the steering column 1 is provided via the column holding member 13.
Since the mechanism for manually jumping up 2 is adopted, it is not necessary to use an actuator that uses hydraulic, pneumatic, electric, etc. as a power source for jumping up, simplifying the structure and reducing the weight,
In addition, there is an effect that generation of heat can be reduced.

In addition, since the first guided portion 24 is provided with the lock mechanism 25 for fastening or releasing the column holding member 13 to the steering column bracket 9, the steering column 12 can be operated in the posture or the operating state. There is an effect that the posture during a break or the like can be reliably held by the lock mechanism 25 without using an actuator.

Second, the column holding member 13 is guided by the first guide portion 10, the first guided portion 24, the second guide portion 11, and the second guided portion 28, and is manually moved toward the driver. The column holding member 13 can be flipped up only by the pulling force in one direction. Therefore, there is an effect that the structure of the steering device 8 can be simplified without using an actuator.

Third, since no actuator is used,
This has the effect of ensuring a wide space near the driver's feet. Fourth, when the steering column 12 is flipped up, the lower part of the steering column 12 is moved to the rear of the vehicle. Therefore, even if the components of the cab 1, the instrument panel 7, and the like are arranged in front of the steering device 8, these components can be used. The jumping angle of the steering column 12 can be increased without interfering with the components, and the effect of increasing the distance between the steering wheel 15B and the driver can be obtained.

Fifth, when the steering device 8 is in the driving posture, the first guide portions 10 and 10 are linear slit-shaped guide holes inclined slightly upward by approximately 45 degrees to the right. Since the first guided portion 24 is about to fit into the other end 10B of the first guide portions 10, 10, there is an effect that the posture of the steering device 8 can be held in a stable state.

In the first embodiment, the lock mechanism 25 uses the first guided portion 24 to tighten or release the column holding member 13 to the steering column bracket 9. The lock mechanism may be configured as follows. That is, the lock mechanism may be configured to use the second guided portion 28 to tighten or release the column holding member 13 to the steering column bracket 9. Also,
The lock mechanism is connected to the first guided portion 24 and the second guided portion 28.
, The column holding member 13 can be tightened or released from the steering column bracket 9.

In the first embodiment, the lock mechanism uses the first guided portion 24 to tighten or release the column holding member 13 to the steering column bracket 9. It is not always necessary to use the first guided portion 24 or the second guided portion 28, and a clamp mechanism is provided at an appropriate position of the column holding member 13 other than the first guided portion 24 and the second guided portion 28. It can be applied and mounted, or can be mounted on the steering column bracket 9.

An embodiment (hereinafter referred to as "second embodiment") of the vehicle steering apparatus according to the first, third, fourth and sixth aspects of the invention will be described with reference to FIGS. I do. In the second embodiment, only parts different from the first embodiment will be described, and the common parts will be denoted by the same reference numerals and description thereof will be omitted. In the figure, a steering device 8 is mounted in a cab 1, and a steering column bracket 41 is fixed to a front assembly 2 of the cab 1.

The steering column bracket 41 has a pair of substantially trapezoidal flat plates 41A, 41A facing each other, and connecting portions 41B, 41C connecting the flat plates 41A, 41A. The connecting portion 41B is fixed to the front panel 4. The steering column bracket 41 is provided with a first guide portion 42 including a guide pin, and the first guide portion 42 is fixed to the flat plate portions 41A, 41A.

The steering column bracket 41
Is provided with a second guide portion 43 composed of a guide pin, and the second guide portion 43 is fixed to the flat plate portions 41A, 41A,
It is located below the guide part 42. Further, behind the steering column bracket 41, the steering column 12 is arranged at an angle. The steering column 12 is fixed or movable (jumped up) to a steering column bracket 41 via a column holding member 44 fixed to one side of the steering column 12.

The column holding member 44 is movably engaged with first guided portions 45, 45 formed of linear slit-shaped guide holes movably engaged with the first guide portion 42, and the second guide portion 43. And second guided portions 46, 46 formed of linear slit-shaped guide holes.

The first guided portions 45, 45 are arranged to face each other in the left-right direction. The axes of the first guided portions 45, 45 are inclined upward (approximately 4
The upper steering shaft 1)
5 is formed in parallel with the axis L. Second guided part 4
6, 46 are disposed to face each other in the left-right direction, and are located below the first guided portions 45, 45. Second guided part 4
The axes 6 and 46 are inclined so as to be lower toward the rear of the vehicle (a gentle downward slope), and are formed along a direction substantially perpendicular to the axis L of the steering column 12 and are linear. ing.

The upper portion of the column holding member 44 is movably held in the substantially vertical direction of the vehicle by the first guide portion 42 and the first guided portion 45, and the lower portion is provided with the second guide portion 43 and the second The guided portion 46 is movably held by the steering column bracket 41 substantially in the front-rear direction of the vehicle. A first lock mechanism 47 and a second lock mechanism 48 for tightening or releasing the column holding member 44 to the steering column bracket 41 are mounted on the first guide portion 42 and the second guide portion 43, respectively. .

The first lock mechanism 47 and the second lock mechanism 48 have the same structure as the lock mechanism 25 in the first embodiment, and a description thereof will be omitted. Thus, also in the second embodiment, the following operation occurs as in the first embodiment. The posture of the steering device 8 is selected corresponding to (a) driving or (b) resting or the like.
That is, the driver holds the steering column 12 by hand and flips up the column holding member 13 (the column holding member 1
3 is moved up and down while rotating the vehicle back and forth), whereby the steering column 12 (a) is in a driving posture state during driving (solid line in FIG. 9, FIG. 10 (a), FIG. 11 (a)).
9) or (b) a jumping state during a break or the like (FIG. 9)
(Shown in FIG. 10 (b), FIG. 11 (b)).

At the start of a break or the like, the first lock mechanism 47 and the second lock mechanism 48 are released from the tightened state, and the steering column 12 is flipped up. In this state, the first lock mechanism 47 and the second lock mechanism 48 are changed from the state where the tightening is released to the tightened state, and the steering column 12 is fixed. This allows
The steering column 12 changes from the solid line state during operation in FIG.

When a break or the like ends, the first lock mechanism 4
7. The second lock mechanism 48 is changed from the tightened state to the released state, the steering column 12 is lowered, and returns to the original state (driving posture state). In this state the first
The column holding member 44 is fastened to the steering column bracket 9 by the lock mechanism 47 and the second lock mechanism 48, and the steering device 8 is in the original state (driving posture state).
Return to.

According to the above configuration, the same effects as those of the first embodiment can be obtained. In the second embodiment, the first lock mechanism 47 and the second lock mechanism 48 are connected to the first guide portion 42 of the steering column bracket 41,
Although mounted on the second guide portion 43, the first lock mechanism 4
Only one of the seventh and second lock mechanisms 48 may be used. Further, a lock mechanism for tightening or releasing the tightening of the column holding member 44 and the steering column bracket 41 can be mounted on the column holding member 44 by applying a clamp mechanism, or can be mounted on the steering column bracket 41. .

[0064]

According to the first to third aspects of the present invention, the following effects can be obtained. First, as compared with the case where the attitude of the steering device is switched using a conventional electric motor, a mechanism for manually flipping the steering column through the column holding member is employed. The attitude of the steering device can be changed without using an actuator that uses pneumatic or electric power as a power source, so that the structure can be simplified, the weight can be reduced, and the generation of heat can be reduced.

Second, the column holding member is connected to the first guide portion,
It is guided by the first guided portion, the second guided portion, and the second guided portion, and the column holding member can be flipped up manually only by a pulling force in one direction toward the driver. Therefore, there is an effect that the posture of the steering device can be easily switched and the structure of the steering device can be simplified. Third
Since the column holding member or the steering column bracket is equipped with a lock mechanism for tightening or releasing the column holding member on the steering column bracket, the steering column can be in a driving posture or a resting posture. In addition, there is an effect that the lock mechanism can be securely held without using an actuator.

Fourth, since no actuator is used,
This has the effect of ensuring a wide space near the driver's feet. According to the invention as set forth in claims 4 to 6, when the steering column is flipped up, the steering column can be moved to the rear of the vehicle, so that even if components of the cab or instrument panels are arranged in front of the steering device, The jumping angle of the steering column can be increased without interfering with these components, and the effect of increasing the distance between the steering wheel and the driver can be obtained.

[Brief description of the drawings]

FIG. 1 is a side view showing a steering device according to a first embodiment.

FIG. 2 is a side view showing a main part of the steering device.

FIG. 3 is a cross-sectional view along X1-X1 of FIG. 2;

FIG. 4 is a sectional view taken along line X2-X2 in FIG.

FIG. 5 is a sectional view taken along line X3-X3 in FIG. 2;

FIG. 6 is a side view showing a state of the steering device during a break or the like.

FIG. 7 is an explanatory view in the X2-X2 cross section of FIG. 2 when the posture is changed from when the steering device is driven to when the steering device is resting;

FIG. 8 is an explanatory diagram in a cross section taken along the line X3-X3 in FIG. 2 when a posture is changed from a time of driving of the steering device to a time of rest.

FIG. 9 is a side view showing a steering device according to a second embodiment.

FIG. 10 is an explanatory view in the X4-X4 cross section of FIG. 9 when the posture is changed from a time of driving of the steering device to a time of rest.

FIG. 11 is an explanatory diagram in a cross section taken along the line X5-X5 in FIG. 9 in a case where the posture is changed from the time of driving the steering device to the time of a break.

FIG. 12 is a side view showing a conventional steering device.

FIG. 13 is a sectional view taken along line X6-X6 of FIG.

FIG. 14 is a sectional view taken along the line X7-X7 in FIG.

FIG. 15 is a side view showing a conventional steering device having a structure in which a posture is changed using an electric motor.

[Explanation of symbols]

 Reference Signs List 1 cab 8 steering device 9 steering column bracket 10 first guide portion (guide hole) 11 second guide portion (guide hole) 12 steering column 13 column holding member 24 first guided portion (guide pin) 25 lock mechanism 28 second Guided part (guide pin)

Claims (6)

[Claims] 1. A steering apparatus for a vehicle, comprising: a steering column bracket fixed in a cab; and a steering column inclined to the rear of the steering column bracket, wherein a first guide portion is provided on the steering column bracket. A second guide portion is provided below the first guide portion on the steering column bracket, and a column holding member having one side fixed to the steering column is arranged from the steering column bracket to the steering column. The column holding member includes a first guided portion movably engaged with the first guide portion, and a second guided portion movably engaged with the second guide portion. The first steering unit, the first guided unit, the second guide unit, and the second guided unit allow the steering to be performed. Ing column bracket movably held in, the column holding member or the steering column bracket, a steering device for a vehicle, wherein a locking mechanism for these fastening or clamping release is mounted. 2. The method according to claim 2, wherein the first guide portion and the second guide portion are guide holes, and the first guided portion and the second guided portion are guide pins fixed to the column holding member. The steering apparatus for a vehicle according to claim 1, wherein 3. The first guide portion and the second guide portion are guide pins fixed to the steering column bracket, and the first guided portion and the second guided portion are guide holes. The steering apparatus for a vehicle according to claim 1, wherein 4. An upper portion of the column holding member is the first column holding member.
A guide portion and the first guided portion are movably held in a substantially vertical direction of the vehicle, and a lower portion is movably held in a substantially front-rear direction of the vehicle by the second guide portion and the second guided portion. The steering apparatus for a vehicle according to claim 1, wherein: 5. The device according to claim 1, wherein the first guide portion is formed parallel to an axis of the steering column, and the second guide portion is formed along a direction substantially perpendicular to an axis of the steering column. The vehicle steering apparatus according to claim 2, wherein 6. The first guided portion is formed parallel to the axis of the steering column, and the second guided portion is formed along a direction substantially perpendicular to the axis of the steering column. The vehicle steering apparatus according to claim 3, wherein: